diff options
Diffstat (limited to 'doc/src/guide/deps.asciidoc')
| -rw-r--r-- | doc/src/guide/deps.asciidoc | 20 |
1 files changed, 15 insertions, 5 deletions
diff --git a/doc/src/guide/deps.asciidoc b/doc/src/guide/deps.asciidoc index 081f4f7..c46dce6 100644 --- a/doc/src/guide/deps.asciidoc +++ b/doc/src/guide/deps.asciidoc @@ -132,6 +132,18 @@ target `deps::` before including 'erlang.mk', for example: [source,make] deps:: $(CURDIR)/deps/triq +Sometimes dependencies are allowed to be missing. However, your application +may depend on an optional application being started. To ensure that an +optional dependency is started before your application, the variable +`OPTIONAL_DEPS` may be used: + +[source,make] +OPTIONAL_DEPS = quicer + +The top-level project can then decide whether to include this +application by adding it to its `BUILD_DEPS` and including +it in the release dependencies. + ==== Modifying the dependency source or version By default, Erlang.mk will look into its package index to @@ -154,7 +166,7 @@ DEPS = cowboy dep_cowboy_commit = 2.0.0-pre.2 Erlang.mk will use the package index to get all information -about Cowboy, except the commit number which will be overriden. +about Cowboy, except the commit number which will be overridden. If you need to set the fetch method or repository information too, for example because you want to use your own fork, or @@ -559,10 +571,8 @@ performed: * Run autopatch on the project Autopatch first checks if there is any project-specific patch -enabled. There are currently three: `RABBITMQ_CLIENT_PATCH` for -the `amqp_client` dependency (before 3.6.0), `RABBITMQ_SERVER_PATCH` -for the `rabbit` dependency (before 3.6.0) and `ELIXIR_PATCH` -for the `elixir` dependency. +enabled. There are currently two: `ELIXIR_PATCH` for the `elixir` +dependency and `HUT_PATCH` for the `hut` dependency. Otherwise, autopatch performs different operations depending on the kind of project it finds the dependency to be. |